@@ -11,6 +11,7 @@
#include <linux/mm.h>
#include <linux/pagemap.h>
#include <linux/tracepoint-defs.h>
+#include <linux/swap.h>
/*
* The set of flags that only affect watermark checking and reclaim
@@ -254,6 +255,89 @@ int find_suitable_fallback(struct free_area *area, unsigned int order,
#endif
+struct scan_control {
+ /* How many pages shrink_list() should reclaim */
+ unsigned long nr_to_reclaim;
+
+ /*
+ * Nodemask of nodes allowed by the caller. If NULL, all nodes
+ * are scanned.
+ */
+ nodemask_t *nodemask;
+
+ /*
+ * The memory cgroup that hit its limit and as a result is the
+ * primary target of this reclaim invocation.
+ */
+ struct mem_cgroup *target_mem_cgroup;
+
+ /* Can active pages be deactivated as part of reclaim? */
+#define DEACTIVATE_ANON 1
+#define DEACTIVATE_FILE 2
+ unsigned int may_deactivate:2;
+ unsigned int force_deactivate:1;
+ unsigned int skipped_deactivate:1;
+
+ /* Writepage batching in laptop mode; RECLAIM_WRITE */
+ unsigned int may_writepage:1;
+
+ /* Can mapped pages be reclaimed? */
+ unsigned int may_unmap:1;
+
+ /* Can pages be swapped as part of reclaim? */
+ unsigned int may_swap:1;
+
+ /*
+ * Cgroups are not reclaimed below their configured memory.low,
+ * unless we threaten to OOM. If any cgroups are skipped due to
+ * memory.low and nothing was reclaimed, go back for memory.low.
+ */
+ unsigned int memcg_low_reclaim:1;
+ unsigned int memcg_low_skipped:1;
+
+ unsigned int hibernation_mode:1;
+
+ /* One of the zones is ready for compaction */
+ unsigned int compaction_ready:1;
+
+ /* There is easily reclaimable cold cache in the current node */
+ unsigned int cache_trim_mode:1;
+
+ /* The file pages on the current node are dangerously low */
+ unsigned int file_is_tiny:1;
+
+ /* Allocation order */
+ s8 order;
+
+ /* Scan (total_size >> priority) pages at once */
+ s8 priority;
+
+ /* The highest zone to isolate pages for reclaim from */
+ s8 reclaim_idx;
+
+ /* This context's GFP mask */
+ gfp_t gfp_mask;
+
+ /* Incremented by the number of inactive pages that were scanned */
+ unsigned long nr_scanned;
+
+ /* Number of pages freed so far during a call to shrink_zones() */
+ unsigned long nr_reclaimed;
+
+ struct {
+ unsigned int dirty;
+ unsigned int unqueued_dirty;
+ unsigned int congested;
+ unsigned int writeback;
+ unsigned int immediate;
+ unsigned int file_taken;
+ unsigned int taken;
+ } nr;
+
+ /* for recording the reclaimed slab by now */
+ struct reclaim_state reclaim_state;
+};
+
/*
* This function returns the order of a free page in the buddy system. In
* general, page_zone(page)->lock must be held by the caller to prevent the
@@ -63,89 +63,6 @@
#define CREATE_TRACE_POINTS
#include <trace/events/vmscan.h>
-struct scan_control {
- /* How many pages shrink_list() should reclaim */
- unsigned long nr_to_reclaim;
-
- /*
- * Nodemask of nodes allowed by the caller. If NULL, all nodes
- * are scanned.
- */
- nodemask_t *nodemask;
-
- /*
- * The memory cgroup that hit its limit and as a result is the
- * primary target of this reclaim invocation.
- */
- struct mem_cgroup *target_mem_cgroup;
-
- /* Can active pages be deactivated as part of reclaim? */
-#define DEACTIVATE_ANON 1
-#define DEACTIVATE_FILE 2
- unsigned int may_deactivate:2;
- unsigned int force_deactivate:1;
- unsigned int skipped_deactivate:1;
-
- /* Writepage batching in laptop mode; RECLAIM_WRITE */
- unsigned int may_writepage:1;
-
- /* Can mapped pages be reclaimed? */
- unsigned int may_unmap:1;
-
- /* Can pages be swapped as part of reclaim? */
- unsigned int may_swap:1;
-
- /*
- * Cgroups are not reclaimed below their configured memory.low,
- * unless we threaten to OOM. If any cgroups are skipped due to
- * memory.low and nothing was reclaimed, go back for memory.low.
- */
- unsigned int memcg_low_reclaim:1;
- unsigned int memcg_low_skipped:1;
-
- unsigned int hibernation_mode:1;
-
- /* One of the zones is ready for compaction */
- unsigned int compaction_ready:1;
-
- /* There is easily reclaimable cold cache in the current node */
- unsigned int cache_trim_mode:1;
-
- /* The file pages on the current node are dangerously low */
- unsigned int file_is_tiny:1;
-
- /* Allocation order */
- s8 order;
-
- /* Scan (total_size >> priority) pages at once */
- s8 priority;
-
- /* The highest zone to isolate pages for reclaim from */
- s8 reclaim_idx;
-
- /* This context's GFP mask */
- gfp_t gfp_mask;
-
- /* Incremented by the number of inactive pages that were scanned */
- unsigned long nr_scanned;
-
- /* Number of pages freed so far during a call to shrink_zones() */
- unsigned long nr_reclaimed;
-
- struct {
- unsigned int dirty;
- unsigned int unqueued_dirty;
- unsigned int congested;
- unsigned int writeback;
- unsigned int immediate;
- unsigned int file_taken;
- unsigned int taken;
- } nr;
-
- /* for recording the reclaimed slab by now */
- struct reclaim_state reclaim_state;
-};
-
#ifdef ARCH_HAS_PREFETCHW
#define prefetchw_prev_lru_page(_page, _base, _field) \
do { \
This struct will be used in multiple source file under mm/, so move the definition of it into mm/internal.h. Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Roman Gushchin <guro@fb.com> Cc: Chris Down <chris@chrisdown.name> Signed-off-by: Yafang Shao <laoar.shao@gmail.com> --- mm/internal.h | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++ mm/vmscan.c | 83 -------------------------------------------------- 2 files changed, 84 insertions(+), 83 deletions(-)